1. C- 446
2. A- 778
3. B- 400
4. A- 11
Answer:
by moving your hands up and down your we're creating transverse wave which travel in a right angle shape towards your friend
<h2>Answer :</h2>
□ The Final velocity of body = 45 m/s
<h2>Given :</h2>
Initial velocity of body = 0 m/s
Acceleration of body = 3 m/s²
Time taken by body = 15 sec
<h2>To Calculate :</h2>
Final velocity of body = ?
<h2>How To Calculate ?</h2>
<h3>❒ </h3>
Here in this question we are provided that a body is in rest so it's initial velocity will be 0 m/s (because from rest), Acceleration of body is 3 m/s², and Time taken is also given which is 15 sec.
<h3>❒</h3>
To calculate the Final velocity of body we'll use the first equation of motion which says v = u + at
Where,
- v is the Final velocity in m/s.
- u is the Initial velocity in m/s.
- a is the Acceleration in m/s².
- t is the Time taken in second.
<h2>Calculation :</h2>
From first equation of motion
Hence, the Final velocity of body is 45 m/s.
-Velocity is the speed of any moving object in a given direction, whilst Speed is the rate of an object's ability to move.
-Velocity can change if the direction or time is changed, the basic equation of velocity is: v = d/t
v - velocity
d - distance
t - time
If one of these factors change, it affects the other.
Hope this answers the question!